Charles M. Blow: Move on, but never forget

Imagine this scene, which is a common experience for Black people:You are receiving a service for which tipping is a customary practice. Maybe you’re taking a cab or receiving a beauty treatment; maybe having a drink at a bar or eating at a restaurant.Your service provider is not Black. The service is poor. Your server is not at all attentive. You wait for things far longer than you believe you should or far longer than you believe others in the space are waiting.Then comes the check, and